SpeccyDS is a ZX81 Sinclair emulator for the DS. Here's what's new for v0.3:

Complete re-write of the GUI.

Improved the touch screen accuracy on some Nintendo DS systems.

Added Quick Save and Quick Load functionality

Added two new keyboard images. A Save keyboard and a Spectrum +2 keyboard.

Added a new global settings screen to replace the old Controls screen.

Added re-definable keyboard controls.

Added border size control.

Removed the maximim file limit on the Load screen. There is now no fixed limit.

Implemented several Z80 undocumented features, fixing the crash in Ghosts ‘n’ Goblins.

Fixed the flags on the Z80 CPI command, fixing the odd behaviour in Scrabble.